Memory Beta, the wiki for licensed Star Trek content.

Cory was a male Human member of the United States Army in the 20th century. In 1970, he worked with Professor Eugene Eckhart in creating an army of cloned human soldiers, without fear or moral reservations, who would be used to decisively win the then-current war in Southeast Asia. This plot was discovered by Aegis agent Gary Seven, who had the clones teleported off Earth, and erased Cory's and Eckhart's memories of their project. (TOS - Star Trek: Assignment: Earth comic: "My Name Is Legion")